Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 16 Dec 2001 12:31:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 16 Dec 2001 12:30:52 -0500 Received: from mustard.heime.net ([194.234.65.222]:24209 "EHLO mustard.heime.net") by vger.kernel.org with ESMTP id ; Sun, 16 Dec 2001 12:30:44 -0500 Date: Sun, 16 Dec 2001 18:30:25 +0100 (CET) From: Roy Sigurd Karlsbakk To: Subject: Repost: Bug in RAID subsys and/or cache handeling Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org hi all I'm sorry to repost this - I just need some sort of fix, or perhaps try another OS, like a BSD or something On my computer, I've set up a 2-disk stripe set (RAID-0). Each disk has some 120GB disk space, and is pretty fast. Each disk can do some 40 megs per second disk-to-memory. However, when reading multiple, large files (3 gigs each) simultanously, vmstat first shows quite high throughput (~ 40-50 megs per sec). But as I reach the point where I've filled the cache, speed is reduced to 1-2 megs per sec. I'm running 2.4.16 with the latest tux patches plus Andrea's IDE patch. I'm positive that this is not a tux problem. I've also tried 2.4.17-rc1, but all I got out of that was some 20-30% slower I/O. Hardware: Athlon 1133MHz 1GB RAM (highmem disabled in kernel) 1x20 gig disk for root partition 2x120 gig disks in RAID-0 (chunk size = 4096) for data partition Please help me out here... Regards roy -- Roy Sigurd Karlsbakk, MCSE, MCNE, CLS, LCA Computers are like air conditioners. They stop working when you open Windows. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/